thermal: tsens: Disable Tsens interrupts during driver initialization

TSENS upper lower interrupt for all sensors will be enabled by
default. Disable interrupts during driver initialization and enable
them based on client requirement.

Change-Id: Ie54b12dae27a33303a27ea8938d4e1cde7b04a83
Signed-off-by: Jishnu Prakash <jprakash@codeaurora.org>